Code Commands: 10-0 Caution 10-4 Message received, understood 10-7 Out of service 10-8 In service 10-15 Prisoner in custody 10-20 Location 10-29 Check for wants 10-66 Suspicious person 10-71 Shooting 10-79 Bomb threat 10-80 Explosion Code 1 Non-Urgent - no lights or siren Code 2 Urgent - lights only Code 3 Use lights and siren Code 4 No further assistance needed Code 11 SWAT Call up